Tony Stephens
This year, 2015, marks two anniversaries of famous conflicts: the invasion of the Ottoman Empire at Gallipoli in World War I, on April 25, 1915, and the Battle of Waterloo on June 18, 1815.

Here we republish the editorial of The Sydney Morning Herald of April 25, 1916, which celebrates "not so much the birth of a nation as the coming of age of our people in the riper period of full nationhood".

Nick Miller
With the discovery of the Ottoman trench where 'first contact' took place at Anzac Cove, teams of scientists are in a race against time to preserve the Gallipoli peninsula for future generations.

Bridie Smith
The federal government has been asked to intervene to prevent the building of wind turbines on a former World War I battlefield in northern France, where 10,000 Australians became casualties of the Great War.

Tim Barlass
On the centenary today of the sinking of the German warship SMS Emden by the light cruiser HMAS Sydney at the Battle of Cocos Governor-General Sir Peter Cosgrove will praise Australia's achievement in what was its first naval victory.But he also has praise for the Emden's Captain Karl von Muller, who became known as 'the last gentleman of war'.

Aleisha Orr
When Margaret Young's mother died, her father gave her a satchel of letters which gave Mrs Young an insight into the role her mother played as a nurse in World War One - something her mother rarely spoke about.

Aleisha Orr
"Both non Aboriginal and Aboriginal people went to serve in the wars together and they were mates, they were all on the same level and had the same respect for each other and same friendship and I think that's the real Anzac spirit isn't it?"

Tim Barlass
Australia's greatest wartime naval mystery remains unsolved after Chief of Navy Vice-Admiral Tim Barrett said on Wednesday that he couldn't say whether new sonar images obtained by a minehunter were or were not the missing World War I submarine AE1.

Danielle Miletic, Cosima Marriner, Candice Barnes
As our thoughts turn towards Gallipoli for the 100th anniversary next April, the surviving widows of World War I servicemen will be a special focus of commemorations. Three of them shared their stories.

OPINION

While it is now 100 years since the start of World War I, the mental health consequences of going into battle have been with us for as long as war itself. Effective treatment, however, has been a long time coming.

As Australia gears up for next year's centenary of our favourite battle, Gallipoli, we should spare a thought for the first Australian to fall in WWI, Lieutenant William Chisholm, 22, killed - not at Gallipoli - but in France at the outbreak of war.